| Official Name: | Terusan |
| Other Name: | Trusan |
| Settlement Type: | village |
| Pushpin Map: | Malaysia |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Sabah, Malaysia |
| Pushpin Mapsize: | 300 |
| Subdivision Type: | Country |
| Subdivision Name: | Malaysia |
| Subdivision Type1: | State |
| Subdivision Name1: | Sabah |
| Timezone: | MST |
| Utc Offset: | +8 |
| Coordinates: | 6.4333°N 117.6833°W |
| Elevation M: | 0 |
| Elevation Ft: | 3 |
Terusan (also known as Trusan) is a settlement in Sabah, Malaysia. It is about three feet above sea level, and the approximate population within a seven-kilometer radius was 818 as of 2004.[1]
Nearby towns and villages include Jambongan (17.6 nm north), Tagahan (6.3 nm south), Boaan (24.6 nm east), Si Kub (56.8 nm east), and Suba Talan (2.2 nm west).[1]